Details on how it works:Using the Android app, you'll be able to find out that this diplomatic plate belongs to a diplomat from India.There are almost 200 other countries who have diplomats in Washington and other major US cities where there are embassies, consulates, or other missions like the United Nations. On all diplomatic plates, the 2nd and 3rd letters are the unique code for the country. In the example above, the "DL" which indicates India.